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Pterospathodus pennatus procerus
575
Type
Zone
Age range
432.9–432.6
Ma
International Timescale
Wenlock
Sheinwoodian
Llandovery
Telychian
Conodont Zonation
Kockelella ranuliformis
Pterospathodus pennatus procerus
Pterospathodus amorphognathoides amorphognathoides
432.90
432.88
432.86
432.84
432.82
432.80
432.78
432.76
432.74
432.72
432.70
432.68
432.66
432.64
432.62
432.60
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